Information disclosure in Firebirdsql Firebird
CVE-2025-65104
Firebird is an open-source relational database management system. In versions FB3 of the client library placed incorrect data length values into XSQLDA fields when communicating with FB4 or higher servers, resulting in an information leak. This issue is fixed by upgrading to the FB4 client or higher.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.9 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L.
EPSS exploit prediction
EPSS: 0.002 (7.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Firebirdsql Firebird — versions < 4.0.0
Weakness classification (CWE)
References
- github.com/FirebirdSQL/firebird/security/advisories/GHSA-mfpr-9886-xjhg (Vendor Advisory)
- github.com/FirebirdSQL/firebird/releases/tag/v4.0.0 (Product, Release Notes)
Frequently asked questions
- What is CVE-2025-65104?
- CVE-2025-65104 is a high-severity vulnerability in Firebirdsql Firebird, classified under Information Disclosure. CVSS score: 7.9/10. Published 2026-04-17.
- How severe is CVE-2025-65104?
- High severity. CVSS v3 base score is 7.9 out of 10.